Lighting Assembly with LEDs and Four-Part Optical Elements

An apparatus comprising a lighting assembly for illumination of an area, the assembly comprising:

• a plurality of light emitting diodes (LEDs);
• and
• a plurality of optical elements, wherein each optical element of the plurality of optical elements is proximate an associated LED of the plurality of LEDs;
• wherein each optical element of the plurality of optical elements includes:
• a first element;
• a second element that intersects with the first element in a region between the first element and the second element, wherein the first element and the second element are shaped so that at least one surface normal of the first element intersect with at least one surface normal of the second element;
• a third element extending beyond the region between the first element and the second element in a direction away from the associated LED;
• and
• a fourth element positioned proximate the respective LED, wherein the first, second and third elements are positioned above the fourth element, the fourth element having a first boundary enclosing a first surface adjacent the respective LED and a second boundary enclosing a second surface adjacent the first, second and third elements, the first boundary being smaller than the second boundary.

An apparatus comprising a lighting assembly for illumination of an area, the lighting assembly comprising:

• a plurality of light emitting diodes (LEDs);
• and
• a plurality of optical elements, wherein each optical element of the plurality of optical elements is proximate an associated LED of the plurality of LEDs, wherein each optical element of the plurality of optical elements comprises:
• a first side, a second side opposite the first side, and a third side perpendicular to the first side and the second side,
• a first portion disposed at the first side,
• a second portion disposed at the second side,
• a third portion disposed at the third side, and
• a fourth portion beneath the first, second and third portions;
• wherein the third portion beyond the first portion and the second portion in a direction away from the associated LED of the plurality of LEDs,
• wherein, in the direction away from the associated LED, the first portion includes a first convex outer surface and the second portion includes a second convex outer surface different than the first outer convex surface, and
• wherein the first convex outer surface has a first peak at a first distance from a point on the associated LED and the second convex outer surface has a second peak spaced from the first peak, the second peak being at a second distance from the point on the associated LED;
• wherein the first convex outer surface and the second convex outer surface connect at a connection region that is at a third distance from the point on the associated LED, wherein the third distance is shorter than the first distance as well as the second distance;
• and
• wherein the fourth portion has a first boundary enclosing a first surface adjacent the respective LED and a second boundary enclosing a second surface adjacent the first, second and third portions, the first boundary being smaller than the second boundary.